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- Gitignore for DuckDB 12105
- If you work in a Git repository, you may want to configure your Gitignore to disable tracking files created by DuckDB . These potentially include the DuckDB database, write-ahead log, and temporary files. Sample Gitignore Files In the follo
... - https://man.mtool.work/duckdb/2.0/operations_manual/footprint_of_duckdb/gitignor...
- Files Created by DuckDB 10560
- DuckDB creates several files and directories on disk. This page lists both the global and the local ones. Global Files and Directories DuckDB creates the following global files and directories in the user's home directory (denoted with ~ ):
...WAL file is required to recover data. weather.duckdb.wal If you are working in a Git repository and would like to disable tracking these files by Git, see the instructions on using .gitignore for DuckDB .... - https://man.mtool.work/duckdb/2.0/operations_manual/footprint_of_duckdb/files_cr...
- DROP Statement 10033
- The DROP statement removes a catalog entry added previously with the CREATE command. Examples Delete the table with the name tbl : DROP TABLE tbl; Drop the view with the name view1 ; do not throw an error if the view does not exist: DROP VI
...onal since v1.4.0 Drop type typ : DROP TYPE typ; Syntax Dependencies of Dropped Objects DuckDB performs limited dependency tracking for some object types. By default or if the RESTRICT clause is provided, the entry will not be dropped if there are any ot... - https://man.mtool.work/duckdb/2.0/sql/statements/drop.html
- Table Functions 8997
- The table function API can be used to define a table function that can then be called from within DuckDB in the FROM clause of a query. API Reference Overview duckdb_table_function duckdb_create_table_function (); void duckdb_destroy_table_
...bind data set by duckdb_bind_set_bind_data during the bind. Note that the bind data should be considered as read-only. For tracking state, use the init data instead. Syntax void * duckdb_init_get_bind_data ( duckdb_init_info info ); Parameters info : The...bind_data Gets the table function's bind data set by duckdb_bind_set_bind_data . Note that the bind data is read-only. For tracking state, use the init data instead. Syntax void * duckdb_function_get_bind_data ( duckdb_function_info info ); Parameters in... - https://man.mtool.work/duckdb/2.0/clients/c/table_functions.html
- Writing to Iceberg 7979
- The DuckDB iceberg extension supports writing to Iceberg tables when an Iceberg catalog is attached. Writing to a table read directly from storage with iceberg_scan is not supported: the catalog is required to commit the new table metadata.
...nd writes: VARIANT and TIMESTAMP_NS data types Schema-level default values for columns Binary deletion vectors Row lineage tracking The biggest change in practice is binary deletion vectors. In v2 tables, DuckDB-Iceberg writes positional deletes as Parqu... - https://man.mtool.work/duckdb/2.0/core_extensions/iceberg/writing_to_iceberg.htm...
- Merge Statement for SCD Type 2 7452
- This is a practical, step-by-step guide to using DuckDB's MERGE statement (introduced in v1.4.0) to perform upserts and build Slowly Changing Dimension Type 2 (SCD Type 2) tables . Type 2 SCDs let you keep full historical versions of record
..., UPDATE , and soft DELETE (upsert and expire). Much cleaner and faster than equivalent Python/Pandas logic. Full history tracking without hard deletes. Works directly on Parquet, CSV, databases, thanks to DuckDB's connectivity! Prerequisites Basic SQL... - https://man.mtool.work/duckdb/2.0/guides/sql_features/merge.html
- Geometry Data Type 6434
- Name Description GEOMETRY Geospatial entity The GEOMETRY data type is used to store and manipulate geometric objects, such as points, lines, and polygons. The GEOMETRY type was part of the spatial extension but became a built-in data type i
...ething we are considering for the future. Working with Geometries in Different Coordinate Reference Systems One benefit of tracking CRSs as part of the type system is that it prevents a lot of common mistakes that can occur when working with geometries f... - https://man.mtool.work/duckdb/2.0/sql/data_types/geometry.html
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